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CDCLVC1310 Datasheet(PDF) 4 Page - Texas Instruments |
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CDCLVC1310 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 28 page CDCLVC1310 SCAS917B – JULY 2011 – REVISED FEBRUARY 2012 www.ti.com PIN FUNCTIONS PIN I/O TYPE DESCRIPTION NAME NO(s) 4, 9, 15, 16, 21, GND PWR Analog Power supply ground 25, 26, 32 IN_SEL0, 30, 29 I Digital Input clock selection (pulldown of 150 k Ω) IN_SEL1 OE 31 I Digital LVCMOS output enable (pulldown of 150 k Ω) Inverting differential primary reference input, internally biased to Vdd/2 (pullup/pulldown PRI_INN 14 I Analog of 150 k Ω) PRI_INP 13 I Analog Non-inverting differential/single-ended primary reference input (pulldown of 150 k Ω) Inverting differential secondary reference input, internally biased to Vdd/2 SEC_INN 27 I Analog (pullup/pulldown of 150 k Ω) SEC_INP 28 I Analog Non-inverting differential/single-ended secondary reference input (pulldown of 150 k Ω) VDD 10 PWR Analog Power supply pins 2, 6, 19, VDDO PWR Analog I/O power supply pins 23 XIN 11 I Analog Crystal Oscillator Input or XTAL Bypass mode XOUT 12 I Analog Crystal Oscillator Output Y0 1 O Analog LVCMOS output 0 Y1 3 O Analog LVCMOS output 1 Y2 5 O Analog LVCMOS output 2 Y3 7 O Analog LVCMOS output 3 Y4 8 O Analog LVCMOS output 4 Y5 17 O Analog LVCMOS output 5 Y6 18 O Analog LVCMOS output 6 Y7 20 O Analog LVCMOS output 7 Y8 22 O Analog LVCMOS output 8 Y9 24 O Analog LVCMOS output 9 Table 1. Input Selection IN_SEL1 IN_SEL0 INPUT CHOSEN 0 0 PRI_IN 0 1 SEC_IN 1 0 XTAL/overdrive(1) 1 1 XTAL bypass(2) (1) This mode can be used to overdrive the XTAL oscillator with an LVCMOS input. For characteristics; see LVCMOS OUTPUT CHARACTERISTICS. (2) This mode is only XTAL bypass. For characteristics, see LVCMOS OUTPUT CHARACTERISTICS. Table 2. INPUT/OUTPUT OPERATION(1) INPUT STATE OUTPUT STATE PRI_INx, SEC_INx open Logic LOW PRI_INP/SEC_INP = HIGH, Logic HIGH PRI_INN/SEC_INN = LOW PRI_INP/SEC_INP = LOW, Logic LOW PRI_INN/SEC_INN = HIGH (1) Device must have switching edge to obtain output states. 4 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CDCLVC1310 |
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